Webkit的跨域安全问题说明

try{
//see if we can access the iframe's location
//without a permission denied error
var iframeSearch = _getSegment(iframeLoc.href, "?");
//good, the iframe is same origin (no thrown exception)
if(document.title != docTitle){
//sync title of main window with title of iframe.
docTitle = this.iframe.document.title = document.title;
}
}catch(e){
//permission denied - server cannot be reached.
ifrOffline = true;
console.error("dojo.hash: Error adding history
entry. Server unreachable.");
}

try{
if ( (/fcksource=true/i).test( window.top.location.search ) )
sFile = 'fckeditor.original.html' ;
}
catch (e) { /* Ignore it. Much probably we are insi
de a FRAME where the "top" is in another domain (security error). */ }